This is James May's Lexus LS400 he used in top gear's cheap police car challenge. British police spend a lot of money buying Vauxhall Astra, so TG wanted to know if a cheap car would suffice as a police unit. They were each given 1000 pounds to buy a car and convert it to a police vehicle. James bought a cheap but luxurious lexus and added police livery, but couldn't get a siren, so he used one from an ice cream truck.
Mine is based on the 1/24 scale LS400 by tamiya and build box stock, with home printed decals, which unfortunately ran where the clear coat didn't hold.
http://aussiemuscle.totalnfs.net/models/topgear_maypol17.jpg