To buy a car cash, you have to save more and/or buy cheaper cars... Not much way around that.
Investing is great over the long term, but for money you'll need in the next 5 years or so, just old fashioned saving, IMHO.
I believe you can watch both those channels online. Check out Hulu, too. It's still a subscription, but way cheaper than cable, at least around here!
There are a lot of ways to save money - read more and see how much more you can lower your expenses.