Only cast members who work for the Disney Transportation Department have access to these cards, and not all choose to carry (or even know about) them. But for those who do, only monorail operators can hand out monorail cards, boat operators boat cards, and bus operators bus cards. To get one, all a Disney guest has to do is ask.
The Snow White card in the collection is #14, the pink Mark VI Monorail...
Images from the Filmic Light Collection.
The complete set of 18 in order...
1. GILLIG BUS - Mickey
2. NOVA BUS - Minnie
3. ATS BUS - Goofy
4. FERRYBOAT - Woody
5. MOTOR CRUISER - Tinkerbell
6. MOTOR LAUNCH - Chip
7. SILVER MONORAIL - Buzz Lightyear
8. BLACK MONORAIL - Figment
9. CORAL MONORAIL - Jasmine
10. BLUE MONORAIL - Jiminy Cricket
11. GREEN MONORAIL - Sulley
12. ORANGE MONORAIL - Simba
13. PURPLE MONORAIL - Donald Duck
14. PINK MONORAIL - Snow White
15. LIME MONORAIL - Mike Wazowski
16. YELLOW MONORAIL - Cinderella
17. RED MONORAIL - Daisy Duck
18. GOLD MONORAIL - Goofy
Apparently, cards #1, 2 and 3 are nearly impossible to get a hold of as only cast members with the longest seniority are allowed to distribute these. Word is there's a new series of 23 cards which will also include the Downtown Disney transportation.
For more info on Transportation Cards, check out Plan-A-Magical-Vacation.