DIY Solar Mars Exploration Robot Car

S1 : STEM 3 in 1 T-Rex T3 Solar Robot Kits S2 : STEM 6 in 1 Rechargeable Space Fleet S3 : STEM 4in1 Solar Space Exploration S4 : STEM 13 in 1 Educational Solar Robot S5 : STEM Solar Fighter - Gray S6 : STEM Solar Fighter - Blue S7 : STEM 6 in 1 Educational DIY Solar Robot Kits, STEM Assemble Robot Kits S8 : STEM 7 in 1 Chargeable Solar Fleet Equipment Fleet Power Car