I kept track again this week.  No zipcar this week, though we did a get a ride from a friend.  The heat (yet again) made getting around awfully hot some days.  No T rides at all this week.  Lots of bike miles (more than 50).
In the past five weeks, since I've been keeping track, I've ridden the bike more than 200 miles, which is more than I would have expected. 
So, last  week, here's how I got around:
Monday:
walking:  3 miles   
bike:  6.6 miles
Tuesday:
walking: 2 miles
bike:  8 miles   
Wednesday:
walking:  2.75 mile
bike:  4 miles
Thursday:
walking: 2 miles
bike:  11.6 miles
Friday:
walking:  2 miles
bike:  11 miles
Saturday:
walking: 3 miles
bike:  5.6 miles
Sunday:
walking:  3.2 miles  
bike:  1.6 miles 
car:  10 miles (our friend Joe gave us a ride to a picnic)
Totals:
walking:  ~18 miles 
bike:  50.8 miles
T: 0 miles
Car:  10 miles