If I get a seat in the MRT, I can convert my “trolley bike” into “luggage mode” and “slip” the wheels just below my seat.  With my legs on both side of the saddle, the entrie bike take hardly any space.
Today, the lady sitting next to me looked amazed – I managed to convert a bulky “trolley” into almost nothing in a few seconds.
WARNING:
It’s not cool to get stuck half way in a crowded train, do practice at home before you try this in MRT.