Variables:
* One-way distance [miles]
* Fuel efficiency [miles per gallon]
* The cost of One-way Train ticket [$]
* Cost of gas = $4 per gallon [$ per gallon]
* Car Maintenance = $0.05 per mile [$ per mile]

// Car vs Train
	Cost of Train = the cost of the one-way train ticket [$]
	How much gas Car needs(gas) = ( distance / Fuel Efficiency ) [gallon]
	How much you need to spend in gas = gas * cost of gas (4)
	Cost of maintenance = distance * car maintenance
	Cost of car = Cost of maintenance + gas

if (Cost of Train < cost of car)
	pick Train
else
	pick Car