[4] The Peel P50's diminutive size and width means that it can quite easily fit through doorways and enter buildings, as demonstrated by Jeremy Clarkson where, during a 2007 episode of Top Gear, he drove a blue P50 through the BBC's Television Centre.However, his invention never made it into production or in the World Guinness Book of Records, even though it was fully street legal and qualified as a car with 4 wheels.The original P50 used a 3 cu in (49.2 cc) DKW single-cylinder engine, which gave it a top speed of approximately 61 km/h (38 mph), and was equipped with a three-speed manual transmission that had no reverse.Unlike the production Peel P50 (along with all developments and replicas thereof), this prototype used the less stable layout of a single wheel at the front and two at the back.[9] The conventional piston engined P50 is more requested in the UK, priced at £14,879 – whereas greater demand for the Peel comes from the US, where the electric model (at £13,679) helps owners to comply with emissions regulations.