I have 75ft x 605 ft commercial lot. What could be its best use?

Where is the lot, what surrounds it? What is it zoned for? Is it developed? There are a lot of factors involved in such a decision.

I agree, to vague. If it is in a downtown area of a large city where parking is in demand ? It is in a slum area where you risk your life just to visit it ?

Best use is for a sign that says FOR SALE OR LEASE and a phone number, and a call to some commercial real estate brokers.