Yes. The seller owns the title so we have to verify that person. There's also a buyers section on the title and both of these sections need to be notarized.
That depends. If you are in a state that requires a notary, then the answer is yes. The following states in the US require a notary. North Carolina, Montana, Wyoming, Arizona, Oklahoma, Louisiana, Kentucky, Ohio and Pennsylvania.
You can use a Driver's License, a government-issued ID such as a Social Security card or a Passport. If it's a motor-vehicle title, then you definitely need a Drivers License.