No, cheating online is absolutely not possible. Trust me. I'm racing online for 2 years now....What you are experiencing is lag. For example: I had a 1vs1 race last week and my opponent was at the start/finish line all the 5 laps, But there were weapon pads taken when I crossed them, when the race was finished I lost by maybe half a second. I asked him WTF!? And he said he saw me at the start/finish line all the time

Lot's of strange lags and glitches can appear online...