I thought that maybe I'd better collect right away, before she had time to change her mind, so I simply said let's go. She quietly followed me out to the pickup truck. I already had a place in mind, and during the half hour or so it took to get there Sam didn't say anything.
We finally got to a rather isolated farm road that has a bridge over the freeway. I stopped in the middle of the bridge, shut the truck off, and we watched the traffic drive by under us. She was counting the traffic going by, and since she kept looking up and down the road I could see that she was also worried about someone driving up on us. I think we had been waiting there about five minutes so I suggested that I'd keep track of the time for her, but that the sooner she started the sooner it would be over with. She looked over at me, hoping that I would let her out of it, or at least undress her, but I reminded her that since she had lost the bet she was going to have to do this all her self.
Her hands were a bit shaky as she began to unbutton her blouse and pull it out of her pants. She laid it on the seat next to her and then unhooked her bra and took it off. She stopped for a little while and after taking some deep breaths slipped off her pants and underwear all at once. By then she was staring down at the traffic on the freeway, as each truck or car would drive by she would give a little shudder. I thought that I'd better help things along, so I leaned across her and opened her door wide open. I encouraged her to get out and go stand by the side of the bridge above the traffic. She shaking more than ever, but she managed to slide out of the truck and walked over the the side of the bridge when no traffic was coming. She was facing me, with her bare ass to the traffic below, as a few cars went by. I could see a couple of semi trucks coming, with quite a few cars behind them, so I told her to turn around and face the traffic.
She managed to turn just in time to expose herself to all the cars and trucks that I had seen coming. She was holding the side rail of the bridge so tight that I thought she might fall down if she let go. After a couple minutes of this direct full frontal exposure I finally convinced her to walk back and forth a little bit. I think this must have also helped her as she didn't seem quite so nervous when she moved around. She was getting a lot of waves, and honking horns, but so far hadn't acknowledged any of them so I had to tell her to start waving to the truckers at least. She gave me a nasty look, but when the next truck came by she waved at the driver as he blasted his air horn.
Every time a minute went by I called off how much time she still had remaining to expose herself, and it seemed like everything was going well as she had begun to wave to some of the other drivers also. When I called out that she had three minutes to go I looked up to see a beat up farm truck began crossing the bridge we were on. Fortunately Sam didn't see him until he pulled up along side of her and stopped. He was intently staring at her bare ass, since she was facing the traffic, and then asked me what was going on. When I told him she'd lost a bet and was paying for it, he just nodded his head like it was a natural thing. At that time Sam heard me talking so she turned around and shrieked at seeing someone so close to her. I think she would have tried to cover herself up if she could have, but there was no where to run to, and I had possession of all her clothes. Her stared at her nude body for awhile, his eyes kept moving from her pussy to her titties, and after licking his lips a few times muttered something and took off down the road.