Thanks for the suggestions - already downloading the demos!
One more issue: which of the autosimulators is the most widely used to
record replays? I.e. people record replays, they're posted on a website
and a sort of league is created.
If anyone is into first-person shooters here, you may know of an online
project of "Quake speedrunning" - a huge database of Quake replays.
They have quite a community there - with records beaten all the time,
people having fun competing, admiring the most skilled and innovative.
The only similar project in autosims that I know of was created for a
Finnish (?) game "Motorhead". I remember it was fun to download those
replays recorded by gamers eager to beat records. BTW, joysticks were
used for most records, i.e. they were a better controller than keyboard
or steering wheel.
So what is the most active community of "autosim replays competition"
online?