You hop in your car with an axe and drive to the sun, but you'll only be there temporarily. You offed someone with your axe, and you're fleeing to the sun to lie low temporarily while the cops search for you.

Apparently you took a wrong turn, and the place you temporarily hid out was Zanzibar (ざん) — not the sun. Zanzibar is also super hot and sunny, so you can be forgiven for making this mistake.