This is Sukhumvit 101 Alley, Bang Chak, Phra Khanong, Bangkok, Thailand Taken at the start of this year.
They feed the Punniwithi BTS station(Skytrain) This was filmed over a ten minute period.
The last photo tells the story of why they are so great. One is stopped the other can pass on a narrow and busy Thai street(soi)
Upon reflection I guess there are maybe 10 plus Hi Jets servicing every Sky train station. So if thats the case there would be hundereds of them