I hope this doesn't come across as a t/j, just trying to answer OP question.
I answered in the other similar thread that this is not only possible, I have first hand experience (get it...first hand).
Before I go any further, your wayward is more than likely lying. It was probably a "just in case" rubber for a ONS. Whether or not he ever had one who knows?
But I feel I have to chime in because by the other comments made, I must be a liar or pervert. I am neither.
Imagine driving 16 hours strait through because you absolutly had to be somewhere and only got a limited time off work. Do you know how much coffee a human can drink before it's no longer effective? The road lulls us to sleep, even if we aren't tired. It's the monotony. It's deadly. In all my years of driving long distances, the only thing that I can consistantly do to stay alert is engage in sexual fantasy. Most of the time (99%) I don't beat off. Just thinking about hot detailed sex keeps me awake. But when I've had enough coffee to puke, sure I'll take it to the next level. I'll get a condom at a gas station at the next piss break and keep it in the car in case I get the sleepys again. Sometimes I do and use it, other times I don't and toss it. If my W found it, I would be embarrassed to tell the truth (that she wouldn't believe anyway).
I can explain the logistics, but it's not hard at all. Is it safe? IMO safer than falling asleep. My FWW has given me road head before. You won't believe how hyper vigilent my driving became understanding the risk at hand.
I haven't done it in years but not because I think it's wrong or unsafe. It's because I think I'm more likely to get hit by a drunk driver when I'm in the act. That's not how I want my body discovered.
And I've had a vasectomy. I would use a condom with my wife to prolong my finish to extend her pleasure. It doesn't feel as good (duh) but it's not always about me getting mine.
I'm sorry for your lying H. I really am. I do not want to minimize the crap you are dealing with, but the answer to your question is "yes". At least in my universe.