tion and carrying of a camper unit. The purchaser, decedent Van Lewen, had installed such a unit, purchasing it new from Colorado Camp-R-Land. That company installed the camper in standard fashion by drilling holes through the truck bed and securing the unit to the bed with bolts, washers and blocks. The camper was basically a wood frame covered with plywood on the inside and aluminum sheeting on the exposed outside walls. The unit contained a dinette area, an upper bunk, two sinks, a propane gas stove and oven, a propane gas light, and some cupboards. GMC makes no claim of liability avoidance through the fact of the camper addition or its installation.
On October 31, 1969, decedents went on a weekend hunting trip in Grand County, Colorado, anticipating a return to their homes on Sunday evening, November 2. They did not return. On November 5, the pickup camper was found by searchers parked alongside Beaver Creek Road at an elevation of 8800 feet. The ignition was “on”, the gears were in neutral, the gas gauge read empty, and the car battery was dead. Inside the camper the stove was off, the propane light was on but fuel exhaustion was so complete as to allow only an occasional flickering, and the windows were closed. The men were inside the camper, two seated at the table with unfinished cups of coffee and the third partially on the cot. Each was dead.
Plaintiffs’ basic claim to liability has no complexities as such. The subject truck was equipped at the time of sale and at the time of decedents’ deaths wr h a tail pipe that discharged engine e. • haust at a point beneath the approximate center of the truck bed and thus directly under the camper. They claim a defective design as the proximate cause of the deaths. GMC argues that plaintiffs failed to prove either a defective design or causation by competent proof or at all. We have no difficulty in rejecting the latter aspect of GMC’s claim of error.
Following a month-long trial, the jury was instructed on three theories of recovery advanced by the plaintiffs: (1) GMC’s negligence in regard to the design of the truck’s exhaust port location; (2) GMC’s breach of warranty in regard to the suitability of the truck for camper installation and use; (3) GMC’s breach of its duty in strict liability. We conclude that each theory is legally acceptable under the evidence.
Defective Design and Causation
In our consideration the verdict of the jury is entitled to that view of the evidence most favorable to plaintiffs, drawing all reasonable inferences and resolving all factual conflicts in accord with support for the verdicts.1 Westinghouse Credit Corp. v. Green, 10 Cir., 384 F.2d 298, 301; Union Carbide & Carbon Corp. v. Nisley, 10 Cir., 300 F.2d 561, 590, appeal dismissed sub nom., Wade v. Union Carbide & Carbon Corp., 371 U.S. 801, 83 S.Ct. 13, 9 L.Ed.2d 46. In addition to the undisputed facts recited other evidence gives basic support to plaintiffs’ case. Eleven inches of snow surrounded the camper with a much lesser amount underneath the vehicle. Carbon monoxide is odorless, invisible, extremely lethal, and of light density, thus causing it to rise. The floor of the camper was sufficiently porous to allow seepage and the heat of the camper combined with the partial trappage of the gas below tended to create a drawing action. The propane light was not capable of creating sufficient carbon monoxide to cause the tragedy. Motor exhaust carries a high incidence of the deadly fumes. An exhaust pipe carrying the gases to a point beyond the perimeter of the camper would have prevented the accident.
Much of plaintiffs’ case was of necessity based on the conclusions and opinions of expert witnesses. So, top, were GMC’s defenses. In fact, GMC’s argument that plaintiffs made no case at all is based on counter evidence that this was the only incident of its kind although thousands of trucks with similar
1
We leave for later consideration all claims of trial error relating to admissibility of evidence and correctness of instructions.