EE WAS RIDING THE #10 CRICKET (W/ COWORKER AS THE OPERATOR). AS IT APPEARED THAT HE WASN'T GOING TO STOP , PRIOR TO HITTING THE PARKED JEEP (#5) THE OPERATOR JUMPED, AND THEN CRICKET STRUCK TH E JEEP. EE'S LEFT SHOULDER, RIBS AND BACK STRUCK THE CONTROL PANEL AND CONTROLLER.