Since VW killed the diesel market the only way to get range and city economy is the hybrid. My turbo-diesel BMW gets over 45 mpg on the highway, and does better than 30 mpg even with heavy city use. If you do nearly all your driving on a freeway, there are plenty of economical gas cars out there.
Note that I said cars. You can never get true economy from an SUV or a truck. Too much frontal area and an aerodynamically inefficient shape gets you every time. My SUV is the last of the V6 turbo-diesel Mercs, which compensates for these issues to some degree. It gets 23-24 mpg around town and 27 mpg on the highway. My old Xterra broke 21 mpg once with observance of the speed limits and diligent use of the cruise control. Around town it got 17 mpg. My wife's vehicle is the typical modern 2.0 turbo gas AWD SUV, and gets pretty good mileage given the amount of lead in her stilettos. Driven with moderate restraint on the highway it gets close to the magic 30 mpg.
3 of us rented a Nissan Navara 4 cylinder 6 speed diesel for a two week trip around Chile and Argentina. I calculated that my 7 liters per 100 Kilometers was really close to 35 MPG. Not for sale in the US I would have bought one in a heartbeat. Good room and acceleration, comfortable seating for 4 adults and 4WD.
Most of us who have to have heat in a car have many unanswered questions re electric vehicles.