TGV it! You've seen the Top Gear video where the Overfinch Range Rover outdrags the Porsche ... on the grass? It would have been so different if it had been a humid day or the grass was damp:
VROOOOMcoughsplutter"where's the WD40?"... ssst....whawhawha...pssst "try it again" wha wha VRooOOoobuuhwhawhavrOOM "And on that bombshell, GOODNIGHT!"
Besides, with modern turbos getting higher and higher temperatures, there's plenty more to come from the humble diesel engine, and it's all about improving efficiency, not just about pushing more fuel through the thing!