For the moment, if he can, Peter would prefer to walk.
But, for the moment's he can't, he'll take his Pop's sedan, which I've yet to decide what it is.
In the future, he may or may not purchase a Chevy cargo van, sliding doors on the sides and double opening doors on the back.
With computers.
Lots and lots of computers.
He'll name it TARDIS Command One. Or Sexy.
Because he's a big Doctor Who nerd.
... I wish I had the TARDIS Command One...