2nd the motion
You should get some more RAM, and then get some solid state storage for the machine...it will also reduce your power requirements and likely be a bit faster than an old laptop drive for the smaller writes while logging.
You could get a really good little app written and have it display a quick graph showing how far off your best average MPG you are seeing on your current trip instead of just focusing on the actual MPG while driving...maybe a really big display that is easy to read from the corner of your eye, or even have it talk to you.
I had toyed with the idea for my old car of using a carPC and a megasquirt to really maximize MPG by letting it drop injectors when the engine load gets really low, especially for idling...but I am still in the planning stages of just converting it to an EV and then write an app to help with the power and motor management.
Sounds like you have a great adventure ahead with this car!
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-- Randall
McIntyre's First Law: " Under the right circumstances, anything I tell you may be wrong."
O'Brien's First Corollary to McIntyre's First Law: " I don't know what the right circumstances are, either."
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