1. In your opinion, if the government imposes unit sales tax (i.e. $ tax per unit sold) on a product, which one, demand or supply will shift? Increase or decrease? Will the new tax cause "disequilibrium"? Please state clearly about the shift (leftward or rightward) and the equilibrium price and quantity change. No graph is required.

2. If the gasoline price remains low and the high tariff on import car in both China and U.S., what will be the possible impact on the U.S. market price ofTesla Model X? Please explain your answer in the language of economics. A reference link to support your answer is a plus.