yes, of course, I smoke in my truck(s).  Have 2 Toyota pickups.  One loaded 2001 "S-Runner" and a 1994 basic Toyota pickup with a camper shell.  Set the A/C or vent to "outside air" and crack the driver's window.  Works for me.  
As for a car ashtray, I haven't had one until recently.  Designed a new Stinky Cigar-Car Ashtray earlier this year.  They just arrived!  Sent one of the prototypes to Snake Byte to "road test".
See?
 
 
