Hopefully you received my first response to your question regarding your boy Scooter. The combination of lethargy and vomiting really are a concern here, but it sounds like it may be too hard to get to your local emergency vet. I would definitely recommend finding out where the next closest clinic is in case you need it. Given his age, you are going to need to continue to keep a close eye on him. Keep an eye on those mucus membranes, refill time and his respiratory rate as stipulated previously.
It sounds like he is actually doing a bit of vomiting and dry heaving as well. For this reason, you may also want to try him with a little pepcid. The typical dose for this type of situation is 0.25mg per pound of body weight up to twice daily. You can read more about the use of Pepcid in dogs online here: http://www.petplace.com/article/drug-library/library/over-the-counter/famotidine-pepcid
Also make sure he is drinking plenty of water. If he is turning his nose up at it, you may be able to try him with a little chicken broth. Just boil up some fresh chicken until cooked, scoop of the solids and feed him the cooled broth.
Over the next couple of hours, keep an eye on his mucus membranes, refill time and resp rate. Keep him inside comfortable and warm if you can, and hopefully he will be able to have a sleep. Hopefully another family member can try and find another local ER vet clinic that you can use if he deteriorates. Because there are such a range of possible causes for his symptoms, a full ER vet check and diagnostics may be the only option here if he doesn't improve.
Best of luck with Scooter and let me know how you get on.