Of at least making it home at night. Zero-Grid’s demonstrator looks like an electric green Zap! Zebra sedan from the outside, but houses a wealth of creative energy, along with interior-filling racks of batteries and an innovative charging and switching system. While “range anxiety” is still a concern for buyers of even high-end pure electric cars, this hybrid system promises a final electricity-driven sprint even when the fuel runs out. Using a “Battery Alternating Recharging Process” (BARP), Michael Hargett,the car’s inventor, says Zero-Grid’s Zero Kar™, with two or more individual battery packs and a hybrid generator, can recharge one battery pack while the other runs the car. By alternating power and charging among multiple battery packs, the car achieves high mileage even for a hybrid, showing over 131 miles per gallon on average, with one run producing over 141 mpg. It also has reasonable performance, topping 70 miles per hour: the original Zap! Car could only do about 45 mph …