I have tested latency in fast vehicles, and whilst I have not yet got a quantitative value (tomorrow's project;-) ), it seems much lower than the latency of the ir receiver.
There will be tutorials and source code released and an arduino library made, but as with everything else, only if the project is funded, I only have 44/1200£ so far.
There will be an android application released for free on google play for remote control.
I have not thought about a case, but I guess one could make a case out of Lego quite easily :-)
EDIT: if you are interested in helping with the code, contact me via the kickstarter, just make sure I know it's you.