AUH - Dubai bus toilet

Hello and sorry for a stupid question but I need some answers, okay. Could someone please tell be if there's a toilet on board the public buses going between Dubai and AUH airport (E102 or the AUH shuttle service)? So far it seems like there isn't but I refuse to believe they would put buses without a toilet on a 2h route :/ yea i know it's not that long but my ibs thinks otherwise so i just want to plan ahead, please help a guy out