Buy the S2 license.
A voucher is only used if you want to buy S2 for someone else, though there is no harm done if you buy a voucher as you can simply use it yourself. Doesn't matter in the end.
Also, look at WR laps to see where they drive faster, or even directly compare them to your hotlaps with one of the lap comparison tools (Analyse For Speed, etc.)
2) If the throttle is always showing full but decreasing when you press it, you have to invert the throttle axis. To do this, go to Options > Controls > Button "Axes / FF", find the "Throttle" button and press the "invert" button next to it. If you look at the animation in the manual (link above) you'll see how a G25 has to be set up in general.
3) If the steering is too sensitive, you probably don't have it calibrated correctly. Go to Options > Controls and make sure that the calibration lock (on the right side of the screen) is turned off (set to "unlock", I think). Then press recalibrate and fully rotate the wheel left & right and fully press each of the pedals so that the full motion range is detected and used.
No actually the few decent posts are the reason you're not on my ignore list, though it's a constant battle of the shitty ones trying to take over. Was quite fun looking at your self-conversation in the now locked cruise thread, though.
A hybrid in nearly full throttle racing? Completely pointless bullshit PR move. Wow look at the 200gr fuel saved during start and pitstop! Unbelievable! Also look at the overall worse fuel efficiency because it has to haul an electric engine + battery around.
Are you sure? What guarantees that the water containers will stay horizontal? If both have the same weight they could be in either position, unless the bar works like a scale and has an inherent tendency to be horizontal. However that would mean that if you push one of the water containers down (which is what you'd do if you forcefully submerge the ball - the buoyant force will push the ball up but also the water down) some force will be generated at the water-bar mounting point that will make the umbrella fall. The whole apparatus, ignoring it's complete technical infeasibility, would only work if the water tanks were mounted on the ground, not on the umbrella itself.
E: Ah I see if they were connected they'd try to be horizontal by themselves.
Goddamn this whole idea is such a load of crap why am I even wasting time with this.
You still need to know the fuel consumption, otherwise you cannot make an estimate. This is what scania is asking for.
Wikipedia says:
Of course every track has slightly different consumption rates, but you'd have to have exact measurements on how much fuel was added for a certain driver, how much he started with and how much was left after a race to get a meaningful value for a track (and car).