"...leaving overhead wiring behind is the key to becoming economical..."
Track 
8km loop, 16 Stations
4km one way (Map)
Services per hour
12
(one every 5 min)
Operating speed
31km/h
Travelling time
7½ min
from end to end; it is a non-stop trip
Capacity
1,200 passengers per h; each direction
Rolling stock
40 passenger; 6m long
forming three car consists with 116 passenger capacity
Boarding time span
4 min
same for alighting. It is a consequence of the operating system. The cars deployed access ramp makes it super convenient for wheel chair passengers. 
Total investment
$64M
$45M from Council for track and stations
$19M from private car owners
Jobs
94 direct plus 7 indirect*)  
26 working during operating hrs
*) maintenance partly spent as labour in the yard; $60k pa job equivalent
Ongoing subsidy
$2.2M per year; by Council
Operating principle
Waverail see here