Look at this link for the Lithium BugE.
Lithium BugE
For $12000 (I think that is canadian) he built a vehicle that can go 80MPH and a range of 125 miles. Key points:
1) Lithium Ion Iron Phosphate batteries which can last 2000 to 3000 cycles (used everyday about five years).
2) a very complicated charging system, which takes 9 hours to charge the battery bank.
3) registered as a motorcycle for on road use in Canada.
4) needs a better suspension system design.
The Volta electric motorcycles which can only go 50MPH and have a shorter range of 75 miles for $8000 to $14000 seem like a better investment.