car fly cheat enhancement

[theR4K]

IWANTTOMASTERDODO now allows cars fly like seaplane, if comeflywithme activated. For this I recalculate fThrust and fThrustFallOff using car characteristic.
Also if IWANTTOMASTERDODO activated seaplane accelerate faster. But it's max speed stay same.

[theR4K]

so now it independent cheat with name "carsareplane". Also I add some multiplier to cars engine power, bcs without it cars was much more friction(or something like) in air. For huge and slow cars I prefer seaplane values.
In general now car fly with it's max speed, or with max seaplane speed(if own specifications too low).

[erorcun]

that wasn't I meant, I meant you should change/alter the behaviour of COMEFLYWITHME/AllCarsAreDodo with BETTER_ALLCARSAREDODO_CHEAT.

What you did right now is also lgtm but we can't name it BETTER_ALLCARSAREDODO_CHEAT anymore, you should name it something like CARSAREPLANE_CHEAT etc.

[ghost]

also looks ok