Rate the following argument fragment on its writing, argument, and language skills:
Evidence: According to Google cofounder Sergey Brin, autonomous cars would be twice as fuel efficient as today's taxis and buses. With more fuel efficient cars, pollution due to carbon dioxide emmisions will drastically decrease. Fuel efficient cars also help the American economy because if cars are using half as much gasoline, then we only have to import half as much oil, which will save us money as a country.

Score: 1