To get the Canis Mesa, have another player spend $7,500 with Merryweather to send mercenaries after you. You can also buy the Canis Bodhi for $25,000 from.
To make the Canis Bodhi spawn, you must either host or join the Rockstar-created Mission 'Dirt Road.' It will then appear in the location shown on the map, between rocks on the road. However, it will only appear if you've received a text message from Simeon asking you to get it.
The Obey Tailgater will appear in the parking lot of golf course in the area shown here on the map. Refer to this article for specific instructions. The modded Dubsta 2 is an extremely rare spawn and requires specific actions to be completed before it can be acquired.
