I thought I posted that somewhere else in a recent discussion
Alt+(Shift)+letter:
S to send a message (works also on the forum) or save fields when editing

E to edit a vehicle/movie
U to upload a picture
A to add a vehicle
these three work also on the page showing links after you saved changes
on that page, after the save, you also have G to go to vehicle page and M to go to movie page

T to go to the title search box in the top right corner

On the vehicle edit pages there are letters for each field