Consider thedomesticsmarket for gas-fueledAutomobiles. For each of the following events, identify which of the determinants of demand or supply is affected. Also indicate whether demand or supply increases or decreases.

1. People decide to drive more electric cars.
2. A strike by steelworkers raises steel prices.
3. Engineers develop new automated machinery for the production of automobiles.
4. Government imposes a tariff on the imported automobiles.