The "Billy" Test.

The "Billy" Test is a widely used term in the E-skate community. It is in reference to an original brand of Electric Longboards called Billy Boards.
The test it self is very simple. If the seller of the product can ride with various variables and can also ride the max speed safely, then the product can be sold. This test includes but is not limited too, riding on main roads, going up and down hills, bike trails, bumps, gravel, sticks, potholes, terrain, ect, ect. It also differs from company to company.

"Yo check out my new board! It's E-skate and it even passed the company's version of The "Billy" Test."