Various comments: In the scenario described, remote location, broken down, need emergency help now, sure you can pay the $1000 or $400, whichever, for a Sat phone or Spot, and have it to use one time.
Or, you can invest that money, and some learning effort, for the General Class ham ticket, and use it the remainder of your life.
I disagree with the statement that HF radio is no good for emergency situations. At any time of the day or night there are active nets on various HF bands with dozens of people all over the USA (and world even) just waiting for emergency calls.
An older ham HF transceiver can be bought for $200 and up. A military packset can be bought for, say, $300 and up. An antenna tuner adds maybe $50, if you need it. That and a wire antenna to support in a tree, with tent poles, or across the vehicle, etc, will get help when you are busted. Just keep a little juice in the battery! BTW, a 100W HF transceiver only needs an amp or so for receive, and even at 100 W output it only peaks at about 20 amps on voice peaks on SSB, and that's not much to a vehicle battery with maybe 100 AH or more capacity!
If you use the radio daily you'll probably have an HF antenna on the vehicle. But, you have to know the bands and propagation conditions for the time of day. If it's not worth the effort, then get that Sat phone
Bob
WB4ETT
(and yeah, I was in ARES too, EC for Arapaho Co CO, Colorado Front Range EC, and EC for state of CO...several years ago.)