Do not take Interstate Hwy 40 To Saint Johns Arizona from California.You will never want to return! Its an Old Hwy with lots bumps curves humps and long empty spaces with no Gas Stations. Until its redone its Hells Hwy. You want to take Interstate Hwy 10 towards Phoenix, its faster and the Hwy is perfect. But do not take Interstate10 Into Phoenix during rush hours! The Phoenix area is destroying itself faster than California it is a disaster unfolding fast. Phoenix Map