Any incorporated city or town in this state of not more than seven hundred thousand and not less than one thousand population, and any county in this state having a constitutional charter, may rent, lease and improve property, or acquire property by gift, purchase, exchange, or by the exercise of the power of eminent domain over unimproved property in the manner provided by law for the condemnation of land for street or road purposes in such municipality or county, except that nothing herein is construed to limit the right to the use of eminent domain in connection with improved property used for or devoted to commercial purposes; and may construct, install or equip buildings and facilities thereon for parking motor vehicles; and may own, manage, use or operate property and facilities thereon for parking motor vehicles, and make or authorize the making of a charge for the use of property and facilities for such purposes, except that the municipality or county shall not dispense or furnish or allow any lessee or occupant to dispense or furnish, upon or in connection with any property or facility acquired or operated pursuant to this section any product or service other than the parking of motor vehicles.