It's a silly/dumb way to try to calculate it at all; the people making those tweets had the ability to do so [potentially recklessly] while still behind the whe

It's a silly/dumb way to try to calculate it at all; the people making those tweets had the ability to do so [potentially recklessly] while still behind the wheel and as soon as it happened as opposed to the cyclist that had to get to his destination first (and possibly rode the rage off).