This one proved that I can be at the gym at 7:02, get a decent amount of time in on the machine of my choice (they were all empty), and still walk back home with time to change into work clothes for a bike ride into work by 9:00. Or close enough to it.

Machine(s):  elliptical    
Settings:  dunno  
Time:  42 minutes  
Calories:  408  
Calories from fat:  29%  
Average Heart Rate:  121  
Maximum Heart Rate:  133  
Fat burn:  17 minutes
Fitness:  25 minutes
Weight:  not measured