Yes it does. It turns by differential speed of the two motors. The front wheel slides along on grass. It doesn't make a sharp turn but works pretty well on the fairway. We don't recommend turning on concrete. It wears out the front tire quickly.

There is a two years warranty.

Yes, you can replace the battery. It takes about 10 minutes.

When the power is off, you can push it like a normal cart. The motors a gearless so it's effortless to push. Of course, there's an added weight so it's slightly harder to push.

You're looking at around $100. If you play 2 times a week, then you won't have to replace one in 5 years.

The geometry of the cart doesn't change. So if your cart is prone to tip then adding the eWheels will do the same. We're working on a Wheelie bar as an accessory for those who play on a very hilly course.