I shouldn’t really share this, but I like to assume an Edwardian Gentleman approach to such issues.
You should have approached him and said;
“I say, you were frightfully close to me back there, do you have some kind of objection to my method of transport?”
” I feel I should remonstrate with you, as you appear to be less than fully concerned at my apparent discomfiture”
” I shall insist that I gain, at the least, satisfaction. If you cannot indulge me, then I will extract the same by means of fisticuffs, and send you on your way somewhat chastened!”
” Take that, and that, and this, and be so kind as to respect my right to the roadway in future.”
Might be a better approach?