i realised some new stuff upon looking it on the big computer
screen...
1. middle cab (2001), doors are painted blue! doors are white on
3001 and 1001.
2. at second cab 1001, the chair is red on one side and blue on the
opposite side. (see picture 7)
3. the 2 seats at the cab-end uses purple.
4. there are tri-poles on the new cabs.