Coal gasification could replace a large portion of diesel fuel.
Correct you are. It actually pains me to see our natural gas and oil being used to power electrical generation. Coal can do it and cheaper if the EPA gets off their ass.
Oil and gas should be used for fuel in transportation and chemical synthesis of many products. You can also synthesize this from coal but it is a more expensive process and much less efficient. Coal should be used for boilers to make steam to make electricity. It is good stuff, abundant and cheap.