The doc hit it straight on the head. It is a safety type deal. Sae with the oil drain pan that is supposed to go under it that they never gave me. I would trust that vehicle over any other to go offroading in. The doc was also right about the CTIS (central Tire Inflation System) not being present on the HMMWV. Take in mind that this is a military vehicle. 24 volt system, no AC, radio, or nice plush comfy seats. I would still take this stripped down nasty dirty thing over a brand new H2, Tahoe, Durango, Navigator, or Escalade any day.