Vanquish MG promise "Technological Innovation" and "A New Era" regarding aesthetics. Here's a few comments from their brochure:
For the first time in the world of slot cars, Vanquish MG introduce the differential. When a vehicle takes a bend, the inside tyre travels a shorter distance than the outside tyre. Since both distances must be travelled at the same time the angular velocity of the tyres are difference. When connected to a rigid axle one will slide on the track as both will travel at the same speed. This reduces the tyre's life and affects it's grip. The presence of a differential allows for both tyres to turn in an independant manner, eliminating the problem. With a traditional slot car the rigid axle produces skidding which necessitates to a reduction in speed when taking corners. With the Vanquish MG designed system, they have achieved a 15% increase in curve speed over the traditional slot car!