EV Primer & Sample 144V system – The purpose of this document is to provide general guidelines when assessing how an Electric Vehicle (EV) can be used to meet your specific requirements. Some EVs costing $100,000 can do high speeds (90 mph) and 200 miles. That is not typical. Most people want to spend $4000 - $10,000 and do 20 - 60 miles at 40- 60 mph.