I need help explaining this two questions below: If the demand of illegal drugs is inelastic, increased arrests of illegal-drug sellers will increase…

I need help explaining this two questions below:

  1. If the demand of illegal drugs is inelastic, increased arrests of illegal-drug sellers will increase total expenditures on illegal drugs?
  2. Early suppliers of more fuel-efficient cars were able to charge premium prices for them, but that ability faded as other suppliers adopted similar technologies?