Does anyone have any opinion regarding which of these two cars (prius vs. Honda Natural Gas Civic GX), if any, they would purchase?  If yes, I'd love to hear from you.  My take is that the Civic GX is better from an emissions standpoint even though it has about 2/3 the equivalent "MPG".  They cost about the same.  I like the Prius from every other aspect , especially battery operation.  I'd like to make a decision within the next couple of months.  My highway driving is about the same as my city driving, maybe a little less, but as you can imagine, as a Realtor, I do put a lot of miles on my vehicle.  Lower emissions are attractive features of both of these cars.  Your comments/suggestions would be much appreciated!