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G = 5*S*Ta*(Md+Igt)^2 / (A*Iot*(Td+Tg)*Mt^2)
S: How bad or dangerous would it be to get stranded? (1-10, 10=worst)
A: Levet of coast-on-fumes arrogance. (1-10, 10=maximum cockiness)
Ta: How long intil you are due to arrive? (in minutes)
Iot: Importance of arriving on time. (1-10, 10=critical)
Td: Time needed to ride where you are going. (in minutes)
Tg: Extra time added by stopping. (in minutes)
Md: Miles to destination.
Igt: Importance of arriving at all. (1-10, 10=very important)
Mt: Estimated miles now in your tank.
If G is greater than 1, find a filling station now.
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