It's located at the open space beside Bishan bus interchange!
It'll be there until 1st July. Admission is free but the tokens are
$2.50 each and the rides costs 2 to 4 tokens.
We can test some ideas from Brainiac there. 
Whoever wants to can stay for ice-cream at Icekimo at Sin Ming,
more prata along Upper Thomson, or if they're lazy there's Häagen
Dazs at Junction 8.
Now who's up for it? 
Proposed date: How's Friday June 22 (evening)?