Wasu daga cikin manyan motocin fanci da ke kan hanyar suna zuwa da madubai masu jan hankali waɗanda ke da wasu ƙarin zaɓuɓɓukan da aka gina a cikinsu.Ɗayan waɗannan zaɓuɓɓukan shine siginonin juyawa.Ana iya gina waɗannan sigina/hanyoyi a cikin gilashin kanta ko kuma a ƙera su cikin gidan filastik na madubi.Kasancewar waɗannan madubai ne masu tsayin daka, irin waɗannan nau'ikan madubin tirela sau da yawa suna da wasu zaɓuɓɓuka, kamar fitilun kududdufi da zafi.Kamar yadda zaku iya tunanin, yayin da zaɓuɓɓukan suka taru, farashin ya biyo baya.

Wasu manyan motoci ba a taɓa gina su da zaɓin madubin sigina ba, duk da haka masu motocin suna son su.An yi sa'a a gare su, masana'antun madubi suna sauraro kuma suna ƙirƙirar madubai tare da ƙarin dogayen wayoyi waɗanda suka shiga cikin kayan aikin siginar motar.Wannan na iya zama mai rikitarwa, kuma yana iya zama, amma idan kun kasance nau'in mutumin da gaske yana jin daɗin abubuwan sanyi da ƙarin aminci lokacin ja, to yana da daraja sosai.Idan babbar mota tana da wannan zaɓi daga masana'anta tare da daidaitattun madubai, manyan na'urorin wayar tarho na madubi galibi ana tsara su don toshewa daidai ba tare da wani wasan kwaikwayo ba.Abin takaici, wannan gaba ɗaya ya dogara da shekara, kerawa, da ƙirar babbar motar.