Driving Victoria to Comox is 50% cheaper (half the price of bus ticket)

Average cost of bus: $60

Cost of driving: $35

Example data: Currency in Canadian Dollar

Driving Distance: 140 Miles / 225 Km.

Driving Time: 3 hours

Vehicle: KIA 2008 SPORTAGE SUV, 2 Liter, Automatic

Miles per Gallon:
21 miles per gallon Combined
19 miles per gallon City
24 miles per gallon Highway

Kilometers per Liter: 9 km/Li

Fuel cost per Liter: $1.30 per Liter of gas
Fuel cost per gallon: $5 per gallon of gasoline 

Miles per dollar of gas: 21/5 = 4 miles per dollar
Kilometers per dollar of gas: 9/1.3 = 6.5 km/dollar

Fuel Cost to drive from Victoria to Comox, BC:
140/4 = $35
225/6.5 = $35

Conclusion:
Driving from Victoria, BC to Comox, BC is half the price of bus ticket.