Rinspeed Presto

In town, this makes the outlandish machine remarkably easy to live with. To shorten the car, simply flick a switch and leave the hydraulics to pull the rear into place. To extend the wheelbase and carry passengers, simply reverse the procedure. Based on Mercedes' A-Class, the car feels nimble but the suspension is harsh with the rear fully retracted. The extra length adds space and comfort in equal measures, but contributes to reduced steering response.

Powered by a 'dualfuel' diesel engine that's also capable of running on compressed natural gas, the car is both responsive and economical. However, this practicality has a price; the Presto has no doors or roof.
Passengers have to climb in and out, and are offered no protection against the elements.

On display at this week's Geneva Motor Show, the Rinspeed is unlikely to appear in your local dealership soon. However, the concepts shown on this unique showcar are interesting and practical. Don't be surprised if the ideas appear in one form or another in the not-so-distant future.