how is the road condition from Mangalore to Bangalore?

I am travelling to Bangalore next week & I want to know how is the road condition. I am planing to take the shirady ghats while going & coming back. I am planning to start around 6AM in the morning. Is there any good restaurant along the way for breakfast & lunch (preferably pure veg)? Also is there anything that I should know as this is my first time driving to Bangalore?