{"columns":["Rank","Engine Type","2017 Units","2016 Units","% Change","2017 % Share","2016 % Share"],"columnFormats":["rank","","number","number","percentage-change-bar","number","number"],"rows":[[1,"Diesel","2,347","2,773",-15.36,"99.91%","100.00%"],[2,"Gas","2","0",0,"0.09%","0.00%"]],"title":"Heavy Commercial Vehicles By Engine Type"}