As for the Bluetooth to Serial thing.. I'm plannin' to give it a try.
CarOBD -> ELM323 -> SerialBTAdapter -> BTonLaptop -> JDash.
I'll let you know how I make out. Once I find the BlueTooth serial adapter I want to try.
I'm thinking about trying this one
http://www.aaxeon.com/products/Productd ... I-SD100-00
because it appears it can be powerd through pin9 on the DB9 port. Now I need to find out if pin9 on the ELM323 has power comming out of it?