battery powered bikes several advantages

With the rise in oil prices in recent years, battery operated bicycles industry wells:
The following briefly say the advantage of battery powered bikes:
1 low price, nice
2 operating threshold is low, no driving license, driver's license.
3 high security performance, when speed is not more than 50KM, maximize reduce accidents,
4 battery tricycles closed, convenient travel, the elderly and children to reduce wind and rain
5 green, pollution-free.