Michigan Governor Rick Snyder signed a bill on Tuesday that will keep electric carmaker Tesla Motors from selling its cars directly to consumers in the state, home to the biggest U.S. automakers.
Snyder said in a letter to members of the state House of Representatives on Tuesday that the measure merely "clarifies" existing law not to allow direct manufacturer-to-consumer retail sales. Those sales, he said, must be made through franchised dealers.
Read MoreDaimler sells its 4% stake in Tesla
Michigan becomes the fifth U.S. state to keep Tesla from easily selling cars directly to consumers, joining Texas, New Jersey, Arizona and Maryland, according to Tesla.
In all of those states except Michigan, Tesla operates "galleries" where consumers can view Tesla cars but cannot discuss prices, take test drives or order cars.