I see it like this, if someone treat me with respect, i return the favour, if like the daft bint in the Fiesta the other day who overtook me approaching a roundabout then slammed on then they leave themselves open for retailiation, she didnt have space to overtake as the roundabout was bunged up but did anyway out of bloody mindedness leaving me nowhere to go, slamming my brakes on and glancing my front wheel of the kerb so I twatted her passenger window, the silly twat was stationary due to the cars on the roundabout, she handnt seen any further than getting past the cyclist, she deserved it and I have no regret, sometimes cyclists are too passive and are seen as soft touches, we are vulnerable enough without taking everything like a bloody Buddhist Monk, but I concur you need to watch and think of recriminations.
I will do it again if put in that situation, I think the girl thought it was me actually hitting her car because of her manuever as she made off sharpish. I am not into intimidating women but I would say a woman in a car is more intimidating to me pulling stunts like that than I am to her.
Would watch kicking cars, especially when moving, would be easy to get a foot caught.