WRT "I uploaded the complete car last time by mistake - doh!" the car you uploaded bears little resemblance to the original Lotus 11, a low-powered, lightweight, agile little G-modified roadster that would have trouble touching 125 mph downhill with a tail wind. Your car was a rip-roaring, tire-shredding beast that is faster around Lime Rock than most of the hottest C Modified cars of its era (D-Type, Ferrari 250TR, Aston Martin DBR, Maserati 450S, Lister-Chev, etc. Whoever rewrote the data.acd, forgot to modify the gear ratios, so it quickly runs out of gearing at 150+ mpg. OTOH, your skins are great!