A speciality shop for "motor assisted bike"

[English]
Do you know "motor assisted bike"? I don't know how to say it exactly in English. It is not a motor bike. They are a kind of bikes which are assisted by electric motor in the starting to run and in slope. Maybe it is Japan original bike. Now many housewives are using it for shopping. They, with a pile of loads on them, can climb slope as fast as sport bike.

How do you think of it? At first, I laughed at it. But after I tried it, I loved it. Really! I want one for shopping! f^_^;

[Japanese 日本語]
東京都内に”電動アシスト付き自転車専門店”を見つけた。
「都内だからこそ成り立つ店だよなー。」と思うことしきりである。
貴方はどう思われます？
アシストバイクは一度試乗したが、あれは「一度乗ったらやめられまへんな」的乗り物だ。

うーん、ぜひ一台欲しいっ！