Understanding the pro's & con's of mobiles versus HT's, if he decides to go with an HT anyways: I have the Yaesu VX150. It was $120 online, nothing fancy, basic 2M unit, rugged yet still does 5 watts. I got it with a lapel mic, leather case, belt loop, DC power cable and mag mount antenna with adaptor for $200 plus shipping.
The case/belt loop can be used for interior mounting if you fasten the belt loop to your dash or a grab handle, etc. The lapel mic then works like a mobile mic. You can transmit with this unit when it is plugged in to the hard wired DC power cable so no worries about dead batteries.
You can use the 3db gain magmount antenna later with a mobile if you choose to go that route.
Randy Rosetta KDØKWX TLCA #19351 69 FJ40 "Meanie" & 1970 Boss 302 Mustang