May Carlson enforce Peterson promise that he could use the drive “anytime? Why?

Carlson purchased a parcel of real estate that was landlocked. Carlson called his neighbor, Peterson, and asked if he could use an abandoned drive on Peterson’s property to travel to his (Carlson’s) property from the highway. Peterson said, “Sure, anytime.” Later the two became engaged in a dispute, and Peterson blocked the drive. May Carlson enforce Peterson’s promise that he could use the drive “anytime”? Why?

"Order a similar paper and get 15% discount on your first order with us
Use the following coupon
"FIRST15"

Order Now