Great work, there are a few issues here and there (i.e. the rev limit sound), the car seems a bit too fast but these are not huge flaws anyway.
btw here's a quick fix for the tachometer:
[RPM_INDICATOR]
OBJECT_NAME=ARROW_RPM
ZERO=0
MIN_VALUE=0
STEP=0.030
OBJECT_NAME_MAX=
LUT=(0=0|1000=-29.5|2000=-59.75|3000=-90|4000=-120.25|5000=-150.25|6000=-179.75|7000=-209.5|8000=-239.0|8500=-279.5)