This Earth Day it's e-tron vs e-train! Shapur Kotwal and Ruman Devmane are in two very different types of electric vehicles as they journey from Nashik to Mumbai. Shapur is behind the wheel of the 408hp Audi e-tron while Ruman is passenger in the Rajdhani Express whose dual electric locos make 12,000hp! Question is, which EV's quicker?