Once upon a time...(David, feel free to start a new thread if appropriate)
There were several advantages to stuffing your chase car full of gear.
Back in the 80s and early 90s chasers would do anything to get a peek at a radar or a visible satelite image or at least a verbal description of whats going on. That meant packing a TV, scanner, computers, ham radio...even a DirecTV dish to get the latest from TWC. They would put monster antennas all over their car (the 'porcupine' look), and strange looking gizmos everywhere. There was little/no internet, thus chasers had to stop by the NWS offices to get their data, as laptops were way too expensive back then. Also, listening in on the NWS broadcasts, and plotting reported surface observations was the way of life back then. I did subscribe to the Accu-Weather data modem service...way back then...
The folks that outfitted their cars back in the 90s/early 00s were called techno-chasers. Heck, I had an amateur television transmitter in my old Nissan truck to send LIVE television pictures back to the NWS Denver. I used an 11 element UHF beam on a mast and rotor, and a 20 watt amplifier. I'm sure Dean Cosgrove remembers my old goofy lookin' truck. Yes, I was one of those goofy techno-geeks that love that stuff...still do.
My point is that I'm not so sure one needs all that 'stuff' these days. A celphone, laptop, and a data cable is all that's needed. Cellular coverage is so good, that I don't worry about 'data holes' anymore. With the spotter network available now, and being able to call your report in WHILE STILL CONNECTED...gets the job done to report what you see. There are chasers that actually broadcast LIVE TV pictures through the internet as they chase.
Cool stuff.
So...sintered to the basic question...why have all that 'stuff' all over your car anymore?
Tim