Fix Car Select On Android

[NVT_06]

As many of the Android users will know, when selecting cars, if you want to go back to the car selection you have to tap the screen twice to go back into it, which is quite inconvenient and annoying.

It would be better to be able to tap an area in the center of the screen, around the car, to go to the track selection (as for the track selection itself and the 'Flip car' command during races) and touch anywhere on the rest of the screen to go back (as for the menus).

In this photo the red shape indicates the area to be tapped to move forward, and it's big enough to cover the cars.