Amazon has the newEcho Auto Hands-Free Car Kit w/ Alexa on preorder by invite only for $24.99 with free shipping on $25+ or with Prime. Click "Request an invitation" to try and get on the list. Basically brings Alexa voice control into your car.

Other new devices available for preorder, some with discounts available:

• Echo Show 2nd Gen for $230 or get 2 for $360 ($100 off 2)
  
• Echo Plus 2nd Gen + Philips Hue Bulb for $150 ($15 off)
  
• Echo Dot 3rd Gen for $50 (or two for $80)
  
• Amazon Smart Plug for $25 (regular price)
  
• Fire TV Recast 500GB OTA DVR for $230 (regular price)
  
• Echo Wall Clock for $30 (sign up to be notified; not available for preorder yet)
  
• Echo Sub Subwoofer for $130 (regular price; some discount bundles avail on the page)
  
• AmazonBasics Voice-Controlled Microwave w/ Alexa for $60 (regular price)
  
• Echo Input (make any speaker "smart") for $35 (regular price)
  
• Echo Link Amp (Sonos-like but cheaper) for $300 (regular price; not yet available)