A 1L Yaris? See you next year mate. That would take an age to drive 445 miles. If you can(somehouw) average 70, then thats still six and a half hours each way, not including breaks. However(as is my experience) it will take much MUCH longer to do it. Think it took us 14 hours to get from Glasgow-ish to Milton Keynes, so 25 hours max, with a 2-2.5 hour gig as well, with no sleep, really would be pushing it.

Good luck to you, though.