The following is just IMO...
I've read through most of the posts and have been following this for a couple of weeks. Note, this is about 40 minutes from where I live.
The "Harvest Drive" issue keeps coming up, and my thinking is a little different than what I've been reading here, so I thought I'd post how I'm seeing it. What if he initially drove past the Harvest Drive location with the intention of ditching the clothing, but couldn't, because someone was there? What if he simply went back later to do it later when no one was around?
Why did he just bury the bra and stockings? What about the rest of her stuff, or even her? From what I read, she took her stockings and bra off prior to leaving for home. According to her family she knotted them up to keep them together. They were still "knotted up" and it sounds like this was something she habitually did, not something HE did.
Now what if Smoker did what ever he did with her and then later realized that SHE had left her stockings and bra in his car? Maybe she hid them under the seat as "evidence" and he realized it later (possibly when cleaning or vacuuming the car to get rid of evidence?) and had to ditch them somewhere?
Remember, she did not wave back at the Amish that waved at her as is customary, even if they don't know each other. Was that her "signaling" that there was something wrong? To me, it shows she had the presence of mind to communicate in her own way that she was in trouble. So, could she have hidden the bra and stockings to leave evidence?
Again, I want to emphasize this is all IMO.
Smoke seems to be somewhat limited in his travels. He didn't go very far to kidnap his victim. He didn't travel very far to dispose of her bra and stockings. The time frame between abducting Linda and passing Harvest Drive is a very short one, only about 15 minutes, but cell phone records show he was in the "general area" of Harvest Drive on 6/21 between approx 2:30 and 3:30 pm. Just 2-3 hours after abduction LS.
Did he actually have time to drive to Welsh Mountain, do what ever he did to her, drive back, go to vicinity of Harvest Drive all in a time span of a couple of hours? Maybe, but why would he go all of the way up there?
One last thing, the arrest report states that a witness saw JS at Harvest Drive on 6/23. He called the police. He also looked in JS's car AND TOOK PICTURES. What was in there that prompted the witness to take pictures. The police arrived after JS left. The witness showed the police the pictures. Yet the bra and stockings were not actually discovered there until 7/10. IMO...This part does not .make sense at all!