4. (1) Hybrid cars have the potential to protect the environment and help drivers save money on gas. (2) However, hybrid cars tend to be significantly more expensive than regular cars. (3) Typically, such cars cost around $3,000 more than their gas-guzzling counterparts. (4) Add up the money hybrid drivers save on gas and it will take them an average of seven years to make up for the price difference. (5) Second, today's hybrid cars tend to have less space than traditional cars. (6) Large battery packs are typically placed behind the back seat, giving drivers less space to store items in the trunk. (7) The back seats in most hybrid cars don't fold down, which can make it difficult to transport large objects. (8) Third, many people are intimidated by hybrid cars. (9) New dashboard gauges that track how the car is being powered can be overwhelming to drivers. (10) It may take some time for people to feel familiar and comfortable with this new type of vehicle. The implied main idea is that a. hybrid cars have so many drawbacks that they aren't worth purchasing. b. the higher cost of hybrid cars means that only wealthy people can afford to purchase them. c. although hybrid cars don't guzzle gas, many people are intimidated by their dashboard gauges and large battery packs. d. there are still several drawbacks that keep drivers from purchasing hybrid vehicles