There looks like plenty of room to get through that gap. Failing that, you could have checked if it was unlocked (window is open) , let the handbrake off and rolled it forward a bit. As a last resort, give it a nudge with the other car then bugger off quickly! lol
this prick with a big mouth had a go at a taxi driver for no reason and kicked his car, the taxi driver did not do anything wrong to warrent being talked to like this , ok the taxi driver got his revenge but the biker deserved it , may teach the prick a lesson to keep his gob shut when not required to speak