I'd agree. Repeating the "Dépose véhicule" doesn't do anything but take up space.
So you could provide a grid instead with each square showing an open time slot, the times already consumed being blacked out. Click a square and a form appears to collect additional information.
If the granularity is 15 minutes, you can get 4 of them (an hour) across one line. Treat it like a calendar widget, with a heading that allows moving between days (or probably half-days, since there mightn't be enough space for 8 lines if it's an 8-hour day).