They need to find a good storage system that isn't loaded with deadly toxins. Solar also needs to be better utilized. It's free and will be around much longer than humans. The manufactures need to work on developing good fully electric cars that are powerful, quick, cost effective and have more than 200 miles range on one charge. I can't even drive to visit any of my family with the current electrics. It would take my two days to drive the 275 miles because I would need to stop and recharge the batteries along the way. Hybrids are better than full gas cars if you don't spend a lot of time at freeway speeds. I commute on motorcycles so I would want something more suited to longer trips.
I'm sure we will see better technologies coming mainly because the big 3 will be forced to improve their designs and lower the cost of ownership so they can stay competitive.