[Racer26]

During my time with 1075, we had a custom motorized forklift-cart, which had 2 large deep-cycle marine batteries powering it, (and a compressor, and the programming laptop, and, and, and)

It made appearances at GTR and Waterloo, and while the safety advisors DID have lots to say about it, we'd pre-emptively quelled most of their concerns by having numerous lockouts. The cart would not move, unless the driver was seated in the driver's seat AND was pushing TWO lockout buttons on the joystick, AND the front bumper of the cart was not touching something. Additionally, it had a horn and rotating light (ca. 2003) for alerting people of its presence, and a team of people who would keep the path clear for it when moving. The batteries it carried were never considered to be a concern (though they were reasonably contained by its body).