To answer Dreamweaver:
Manned and driven by Andy Green
Jet and rocket power
All four wheels in contact with the ground at all times as required by FIA regs
Two runs in opposing directions over the same measured mile or kilo within 1hr - also as required by FIA regs
Not sure what other current LSR requirements you think there are apart from the above.
Can it be done? To quote Ron Ayers prior to the ThrustSSC build decision, "only if the research shows it's probable rather than possible". I doubt that much has changed this time although nothing can ever be guaranteed. But then that's what record breaking is all about surely.
Robin