Please let me know what 'don't impose the Insight convenience penalties' mean here in context below and what do you think the correct answer to the question below.

The 2000 Honda Insight was the first production hybrid to hit American shores and seven years later it's still the most fuel-efficient vehicle sold. Though that's a worthy accolade, the reality is that newer hybrids such as the Honda Civic Hybrid(fully redesigned for 2007) and the Toyota Prius still offer high fuel mileage but DON'T IMPOSE the INSIGHT's CONVENIENCE PENALTIES. For 2007, we would recommend the Insight only to consumers interested in a commuter car that gets exceptional gas mileage.

Question. What can be inferred about fuel efficient cars?
a. Their sales have reached a plateau.
b. The technology is developing gradually.
c. They are slowly becoming popular.
d. There is a lot of hybrid competition now.

Does 'but DON'T IMPOSE the INSIGHT's CONVENIENCE PENALTIES' mean that new hybrid cars are better than the old Insight when it comes to convenience?

Plus, what do you think the correct answer would be to this question and why?

Thanks in advance.