I was asked how I set up the rx system in the hire car (Im pushbike/legs mobile otherwise :-) so I put together a very short
technically undetailed video from photos I took yesterday whilst driving up to Wooloroc. OK  -( try Googling it - nice place!)
 
Temp power is just from the Cigar lighter in most cases (I know)- inverter for PC @ 110VAC, Walmart Schumaker 450W isnt very noisy and I 
can leave it on whilst driving.
 
This Jeep is OK on LF and MF but dashboard CPU noisy evident from 3MHz and Up -- every car appears to have different EMC issues.
..I would normally use a wider/shorter strap to bond the coax to the chassis. The rx  system described here is good enough to receive
 Transatlantic LF 137/500 signals on a good day from the UK, if you get a quiet spot away from power lines etc.
 
http://www.youtube.com/watch?v=sPIdkiE-PQo
 
Laurence KL7UK / Mobile 5