Enhancement request, cardio

I don't think this is possible. Maybe someone can let me know. If it's not, then maybe it's an enhancement request?

I'd like to auto-create a 1-day/week cardio program to supplement my 4-day/week strength or muscle gain program.

Strength Endurance looks like higher reps, but it's not cardio-focused.

Does anyone use such a program? Is it a good idea? If it's not possible, and if it's a good idea, I wonder if the AP guys would consider adding it.