( grimly, he inspects the door, reaching out to rap once against the window. ordinary glass as far as he can discern, which means it should be vulnerable to a strong enough blast of hydro. )

I believe the colloquial term is known as 'breaking and entering'. So in this case: breaking and exiting.

( alas, no one is laughing.

least of all the car, who appears quite alarmed at the prospect of an act of violence being committed against it. the smooth jazz quickly changes to a discordant series of notes, the lights begin to flash off and on, and the car horn suddenly depresses, letting out a slow anxious whine.

the abruptness of it all has him pausing, his rising hand halting in midair. )

No. I do not know what is causing all of these—disruptions. Are you certain there is no one else in here in addition to ourselves.

( with the door forgotten, he leans forward to peer into the front carriage for himself. )