I'm planning to purchase an eBike spring of 2015. Perfect for my needs and geography, which includes lots of rolling hills

One can get a very vigorous workout on an eBike because the level of assist is controlled by the rider at all times. Anywhere from no-assist to a high level of assist, with a couple choices in between. It can be a great option for those who would like to drive less and bicycle more, being able to run errands, commute to work, and various practical uses, not only for fun. Most people drive to run errands within 5 to 8 miles of their home. Also for those who have injuries, knee replacements, or had surgery, an eBike can get them back to cycling or supplement what they are able to do on their own.

For me I need the assistance because I have a lot of hills and it's just not any fun having to walk the bike.