This is basically what we're thinking too.  We have been saving since before our kids were conceived, and we expect to pay the following: 
In-state tuition at a state university (we live in a state with a wonderful public school system and 16 schools from which to choose) for 4 years.  If they happen to choose a major that literally can't be finished in 4 years (for example, architecture is now a 5-year degree, and nurses are required to do summer school before their junior year), then we'll pay for that expense too.  We'll also pay any fees attached to their tuition /classes.  But we won't foot the bill while they earn 4-year degrees on the 8-year plan.  If they choose a private school, we'll still pay the portion that would've gone to a state school; they can make up the difference with scholarships /loans.  If they get full-ride scholarships (a very real possibility for our oldest), then I'd figure out something to do as a financial reward -- perhaps a car, perhaps X amount for spending money (negating the need for a job), perhaps an IRA -- but we've saved that money for the kids, and we'd do something for them with it. 
We'll pay for a dorm room or suite, depending upon what's available at the college of their choice.  After their freshman year, if they want to live in an apartment, we'll give them the cost of a dorm room to apply towards rent /utilities, and they will have to make up the rest through their own efforts.  We'll also pay for a meal plan so we'll know that they'll never go hungry.
   
We may or may not provide a car during their college years.  If they choose to live on campus, they won't need a car.  If they choose to live at home and attend the state school 20 minutes down the road, the dorm-room money will go towards transportation instead.  If I had to guess right now, I'd guess that one of my daughters will "go away" to school and the other will live at home and commute.  
We'll give them each a nice, new laptop as a high school graduation present -- it's a need these days.  We'll continue to keep a cell phone for them on our contract during their college years (that only makes sense -- an extra line for us is only $10/month, much less than them getting a whole new contract).  And we'll continue to carry them on our health insurance, and we'll pay for things like glasses and dental appointments.  I'd take them on a back-to-school shopping trip in August to pick up jeans, tennis shoes, and notebooks.  I'd make sure to tuck some computer disks into the Christmas stocking to refurbish those things mid-way through the school year.
That covers all the BASICS.  Beyond that, I'd expect them to work a few hours per week for spending money.  I'd expect them  to pay for meals out with friends, new outfits for a dance, etc.  If they have to do without these things, it's not the end of the world -- they'll have all their needs covered.
Unless they make some terrible mistakes, they should be able to graduate debt-free.  
Obviously, all this is based upon GOOD GRADES.  If one of our girls goes away to school and brings home a first report card full of Ds and Fs, then the deal is off.  If that should happen, we'd investigate the possibility of transfering to the local community college or that afore-mentioned state school 20-minutes from home.