Vauxhall/Opel is to reveal a striking concept with ‘production potential' at this month's Frankfurt show that could revolutionise urban transport, especially for younger drivers and those on a very tight budget.A battery-powered electric vehicle, the low, rakish concept will be highly affordable, have a 60-mile range and be capable of 75mph, making even the odd motorway trip feasible.Yet despite its aesthetic appeal, the concept will be practical, affording two seats in a tandem layout, and its light weight - around a third of a small modern car's - would allow it to be agile and fun to drive.Inspired by the Ampera, the concept has the potential to create a new class of light-weight, zero-emissions electric vehicles in the UK and Europe.More details will be revealed at the Vauxhall/Opel press conference at the Frankfurt Motor Show on September 13.