Read the news story and John's blog as it happened.
Henry Catchpole sneaks around the pits here.
This 900bhp Lotus Emeya has Bugatti specs, but carrying passengers reveals a problem
New BMW 3-series revealed – M3 power for the M350 Audi S5 rival
Aston Martin DBX S review – beating the Ferrari Purosangue to the top of the class