S.P.E.A.R. (self-propelled electronic armored rack) systems are self-propelled, electronic equipment enclosures engineered to transport electronic payloads up to 10 miles. Once at the jobsite, on-board power conditioning, cooling, wired and wireless I/O enables operation of the payload while the payload remains securely housed within the electronic equipment enclosure. These mobile electronic equipment enclosures are the first on the market to utilize a patent pending, weight adaptive, multi-axis, magnetorheological suspension system to isolate the electronic payloads from shock and vibration during transit.