Iji Mmemme njikwa zuru oke nke sayensị, okpukpe dị elu na nke dị egwu, anyị na-emeri nnukwu ndekọ ma jiri mpaghara a maka igwe China Carlbad na ndị na-ebunye ego | Ugbo ala Yonsland, 4 Wheel na-eme ngagharị , Ungimbictrictrictri , ụtụ ụgbọ ala na-eme eletrik ,20 Elekere 20 . Anyị nwere ekele maka ajụjụ gị na ọ bụ ihe nsọpụrụ anyị iso enyi niile rụọ ọrụ n'ụwa niile. Ngwaahịa ahụ ga-enyefe ụwa niile, America, Australia, Bangladesh, Bangladesh, Bangladesh, Bangland, Croatia. Ndị ahịa anyị na-ekesa nke ọma na North America, Africa na Eastern Europe. Anyị nwere ike ibute ngwaahịa dị mma na ọnụahịa asọmpi nke ukwuu.