[Pete]

Get one and test it.

If he's so all fired sure his bike can pull it then have him give you a couple for testing it.

Knock together some two wheel cart, load it with 300 lbs of weight and tow it behind his bike through the nearest bike path that has some moderate up and down climbs. Have an app track the ups and downs to see how it operates.

If the bike can't pull it no sense making it - unless he's going to give you tons of money.

One thing to remember - bikes use different muscles than walking. If you don't ride a bike every now and again you can get a real good burn going after about 10 miles - electric assist or not.

I looked at the web site. If you take out the electric motor stuff the site looks pretty much like a high end mountain bike company. Throw in the electric motor and you get a lot of "Wow, cool, outstanding" stuff but when you try and find technical stuff you get a 90 mile range - with the upgrade of the touring battery. Nothing about what elevation changes you can expect in that 90 miles - or how hard you'll have to peddle.