Python Error - help please

What am I missing??

C:\Python33>python ex4.py
  File "ex4.py", line 10
    print "There are", cars, "cars available."
                    ^
SyntaxError: invalid syntax


The code:

cars = 100
space_in_car = 4.0
drivers = 30
passengers = 90
cars_not_driven = cars - drivers
cars_driven = drivers
carpool_capacity = cars_driven * space_in_a_car
average_passengers_per_car = passengers / cars_driven

print "There are", cars, "cars available."      
print "there are only", drivers, "drivers available."
print "There will be", cars_not_driven, "empty cars today"
print "We can transport", carpool_capacity, "people today."
print "We have", passengers, "to carpool today."
print "We need to put about", average_passengers_per_car, "in each car."


python version info:


C:\Python33>python
Python 3.3.3 (v3.3.3:c3896275c0f6, Nov 18 2013, 21:19:30) [MSC v.1600 64 bit (AM
D64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>