The #416 Jon Meyer, Joel Karns and Amy Dilks driven, C1 USA run, Citroen C1 chases The #473 Mike Parsons, Richard Ryder, Lewis Ryder, Steven Graham and Chales Atherton driven, CARR Sport run Citroen, C1 at the international start/finish straight during the 2019 Trade Team Citroen C1 Challenge 24 Hour race at Silverstone.