[Pope of Dope]

I have to bring my daughter places today and stated to mash a batch this morning.  Now into boil, waiting for grandma to call which will mean I'll have to drive around between hop additions (whoohoo).  Wondering for the future, can I complete my mash, remove the grains of course, and then do my boil a few hours later? 

[kramerog]

Yes, but you may want to get the wort to 170 F to denature any enzymes before you go or do a mash out step.

[802Chris]

This is absolutely possible. Search for threads about overnight mashing. The same concepts would apply with a morning mash and an afternoon boil. I would certainly not recommend leaving a boil going without at least some supervision and wouldn't leave my house if I were boiling. But I also don't know your setup or situation, so I'm not going to judge.

[knut]

No problems whatsoever... no need to remove the grains though unless you really want to.