No, just an honest mistake. Oil is a more interesting topic. The dominant use of oil is transportation (71%) versus 24% for industrial power and 6% for residential, commercial and electric power combined. The cost of switching to renewable sources or natural gas for transportation is of course burdened by the large infrastructure required to support it and the development and use of vehicles using other fuel types. But your question was only about the cost of solar energy production version energy production using oil. The broader issue is more relevant.
The cost of using oil for transportation includes the price of crude, the refining into gasoline and the physical delivery of gasoline to service stations.
The cost of solar includes the cost of solar collectors (the energy itself is free), the conversion into electricity, the storage of the electricity (batteries) and the transmission of electricity to service stations.
Solar collectors and batteries have become much cheaper and more efficient in the last 20 years. Oil prices go up and down depending on geopolitics. Now they're down but could easily go back up. I think you have to factor in the cost of wars we've waged in the MidEast to secure oil for our industrial machine. Added to that is the fact that just recently the U.S. became a net oil exporter due primarily to shale oil production.
Therefore, for both economic, environmental and strategic reasons I believe we should continue to transition off oil. But yes, the cost of just producing energy from solar is now cheaper than the cost of producing energy from oil. I think taking us out from under the thumb of the sheiks in the MidEast is a major advantage. Drilling offshore in the U.S. is costly and dangerous. Remember the oil spills in the Gulf and offshore in Alaska?