Recently Hertz admitted that it had more electric cars than it wanted for normal business, and held their annual vehicle retirement sale with a lot of electrics.
Don't reserve "the gold aisle" or any other special category that does not specify the kind of car. You could end up with an electric car you did not want. If you make an "ordinary" reservation and when you get there are directed to a specific aisle e.g. gold to find your car and all they have is electrics not intuitively included in your selection, go back to the office or counter to request (or demand) what your reserved. IMHO "or similar" does not include electric if the models cited e.g. Pontiac Catalina are not electric.
Your credit card collision benefit might exclude some models notably convertibles and pickup trucks. Unfortunately you cannot expect something more to your liking if what they assign to you is large enough to hold the persons and luggage your selection described when your reserved, and has air conditioning and automatic transmission.