So, set the scene. You’re strolling along on a glorious sunny day enjoying everything life has to offer. It’s a Saturday, work is a million miles away and you’re feeling good. Suddenly, a Lamborghini Murcielago roars past in a flurry of ooh, ahhs and general public awe for this rich, slightly balding, slightly pot-bellied stranger.

Just as you feel that first pang of jealousy, that pang that says you’d rather not blow your money on such a frivolous item, but by ‘eck you want one. Maybe Lambo guy decides to up the revs drawing even more attention to the colossal beast on which he mounts. Maybe he even checks your girlfriend out.

Occasionally, we can only drool over a north of £200K supercar while it tears off in into the sunset (or a 20 limit school zone) and occasionally, a car is born that no-one can own. Not even the super-rich, not even bachelors with nothing to spend their money on but fun, absolutely no-one at all. In the world.

Concept cars, we salute you! So, here are some of the best; the wackiest, the wildest and the plain outrageous.

The Volvo T6 Concept

There was only one Volvo T6 ever built in a haze of modern hot rod glory. Hand-built using components used in the S80, the T6 is kitted out with a rear turbocharged 2.9 litre inline 6-cylinder engine. The top speed is disputed, but most claim that it sits at around 200 mph. American hot rod enthusiasts can dream, but this beauty is one of a kind. Although if you’re the proud owner of a Volvo saloon, then the chances are your car shares some of the same organs as the T6. We also have specialist Volvo number plates so you can snaz it up a little.

The Mercedes Biome

The ethereal Mercedes Biome isn’t even a working prototype, and unless you have at least a Masters degree in genetics then you probably won’t understand what the Biome is all about. We’re going to have a stab though. Unveiled at 2010’s Los Angeles Design Challenge, the Biome will be made in a lab using a super strong yet light biofibre. The resulting car would weigh in at only 394kg and would be completely biodegradable. Whether this means it would slowly rot to compost on your driveway is unconfirmed.

As if struggling to even begin to get our head around the concept wasn’t enough, the vehicle, in theory, will grow from both the front and back Mercedes tridonic badge. The interior grows from the front star, while the interior grows from the back. There’s also a healthy dose of genetic engineering going on and the wheels are grown from individual seeds. Crazy, we know.

Nissan Pivo 1 (2005), 2 (2007) and 3 (2011)

If you ever dreamed of driving a car that looked like Wall E’s girlfriend then feast your eyes on the Pivo, a 360 degree rotating chunk of engineering that, despite being a concept, exists in three models, the Pivo 1, 2 and 3. First unveiled at the Tokyo Motor Show in 2005, the Pivo has slowly evolved to become more and more pod-like throughout its short life. With a rotating body, the Pivo is designed to be the ultimate parking machine, both eliminating the need to reverse and displaying the outside surroundings via screens on the A-pillars. The Pivo 2 additionally has rotating pod wheels, perfect for those with a hatred for parallel parking as the Pivo simply rotates its wheels and drives straight in.

Every Pivo is powered by a Lithium-ion battery, but the Pivo 3 can actually charge itself while parked. The parking doesn’t have to be manual either with Nissan’s Automated Valet Parking installed and remote smartphone parking possible.

Ford S-Max Concept

The ultimate car for on-the-go health checks, the Ford S-Max, unveiled at the Frankfurt Motor Show 2013, is the ultimate ambulance-cum-people carrier, with a built-in health kit with heart-rate and blood sugar monitoring. A less wacky concept in the line-up, the S-Max health wagon will go on sale next year, however as an affordable family car (From £22,850) we thought it deserved a shout out. Who needs the NHS, eh?

Maserati Birdcage 75th

As those of you well versed in Maserati history will know, the Birdcage reference in this futuristic concept car gives a nod to the 1960s Birdcage, while the 75th is reference to Pininfaria’s anniversary, the design team responsible for creating the Maserati Birdcage 75th.

Built out of the same carbon fibre chassis used in the Maserati MC12 GT1 and with the same engine, the Birdcage 75th churns out 700 break horsepower, with an overall theme of ‘connectivity’, with a central mobile phone-like device built into the steering wheel.

So there you are: a series of motoring innovations that will never see the streets of Britain, or at least not grace our roads in the foreseeable future. While we can’t guarantee an Aston DB9 won’t make you quiver with jealousy, at least some of the truly amazing concepts are still off limits for even the super-rich. If you want to experience a little of the champagne lifestyle on a lemonade budget though, check out our custom and replacement number plates before you go. No one need know that you don’t actually own a Ferrari, even if the custom plates are displayed above your garage door.