I did 278 mph in my Martel Wasp (no rockets had been used.) I also did 306 mph in a modded Autobello. (rockets helped it, it wouldn't even touch 300 without them.)
I made Sunburst go ~500 km/h (without rockets). It even not overheats and drives normally after reaching 500 km/h
I once had like 30000 km/h in a saturn 5 rocket. (which isn't available for download anymore) --- Post updated --- Ok. This thing goes over 100000. A Limit just doesn't exist.
238mph in a hypercar I built in Automation. It didn't handle at all, and I've since deleted it, but I'm using the engine in another project so I'll update if that is faster. Update- tested the new car using a modified version of the engine, and it does 269mph. Is actually pretty stable at that speed as well.
480km/h with my "Top Speed" SBR4. Had some more to give, but ran out of highway on American Road Topspeed done without any mods
No mods? -468mph No rockets? -357mph Mods? -784mph Mods without rockets? -598mph Deo Velonte? 3000mph Ridiculous? 56466456(glitch)
Anyone remember the extreme drag rig? The one with the invisible wheelie bars? I got that over 600 MPH. I miss that mod wish i could find it again