The vehicle's official categorisation is being mooted. The BB1 has handle bars and a twist-grip accelerator and passengers sit pillion style behind the driver. Although, homologation for a quadricyle is complicated because different countries have different definitions of what a quadricyle is. For example, in France a quadricyle is not allowed on the motorway and the UK has two classes of quadricyle, depending on the vehicle's weight and power.
The BB1 is just 2.5m long and weighs a mere 600kg. It is powered by two electric motors mounted on the rear axle, producing 19bhp combined. Despite being low on power, the BB1 can reach 20mph in just 2.8 seconds and has a 75 miles range.