Race at the NPWDRL, and we'll help you get faster, regardless of the rules.  When you understand all of the concepts and become comfortable in your abilities, you'll be able to pass it down to your son.  If you and your son enjoy building, don't limit it to a once a year event.  Nothing against scouts (i have a son in boy scouts), but don't let scouts control  this activity, you go and control it.  You don't have to race every month, just when you want to, and when next year comes around, tear 'em up.  
And fix those front fenders
				
			And fix those front fenders

 
	 
 
		 
 
		 
 
		 
 
		 
	
 
 
		 with my son one car length behind)
 with my son one car length behind) 
 
		 
 
		 
 
		 
 
		 
 
		