In the BMW? A 12 cell lithium.
Hey kids let's talk about batteries. What is the lightest battery I could use in my car? It is not a daily driver.
M3 is always the answer.
Braille B106?
http://www.hrpworld.com/index.cfm?fo...action=product
M3 is always the answer.
voltphreaks 2.75 lbs, may or may not be strong enough for your M3. They have a 5.25 lbs that will work with your M3.
http://www.voltphreaks.com/products_street.php
VW Bug in running shoes
M Porcupine sedan
M Porcupine coupe
Crusty old e46 beater
Battery Powered appliance car