Desperate to catch a particular train and not able to walk quickly enough to make it from a more remote part of the car park ? That’d only make sense if the available spaces were a very long way from the platform entrance though.
I confess that when I used to bike from work to Oxford station I could sometimes see my train pulling in as I was still cycling towards the bike rack. I chucked the bike anywhere in the rack, sprinted under the tunnel (remember that ?) and more than once jumped onto a moving train. I wasn’t proud of it, but needs must …