Step 1: Drive 17 miles. Ride 1.
Step 2: Drive 16 miles. Ride 2.
Step 3: Drive 15 miles. Ride 3.
and so on...
This gives you a chance to work out the logistics (how to move the bike on/off car, how the ride goes, where to park bike, how to get pretty after the ride, how your knee takes it, how tired you are after work, your ride tolerance after work, how much stuff and tools to bring, how to get everything on the bike, how traffic behaves) without ever risking being late to work or having to push a big ride with stress.
Like Queen said, "Get on your bike and ride!" Riding to work is great training for your commute.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson