Here's the actual legislation [1] (pdf).

Of note, notice the carve-out for automotive industry.

> Sec. 7. Nothing in the Fair Repair Act shall apply to motor vehicle manufacturers, any product or service of a motor vehicle manufacturer, or motor vehicle dealers.

Why is Nebraska making it easy to repair farm equipment and cell phones but not cars?

[1] http://nebraskalegislature.gov/FloorDocs/105/PDF/Intro/LB67....