the fourth that we've written about in the last two months being the Brammo Enertia. The Enertia is a plug-in bike that does 0-60 MPH in under 4 seconds and can go for up to 50 miles on one charge. Brammo is an Ashland, Oregon-based manufacturer that designed and built the bike, making sure that the bike has six 12 Volt lithium-phosphate batteries -- which don't blow up when punctured, unlike Lithium Ion models. It only weighs 275 pounds too, and most of the weight is near the road because the fuel tank isn't needed. The only problem now is the price: $14,995 for the "Carbon" model, and $11,995 for a later model once production is ramped up.