Can you make whipped cream with a SodaStream? So, whipped cream is basically just cream that’s been whipped until lots of tiny air bubbles become suspended in it and it becomes a much thicker foam, right?

Would it be possible to use a SodaStream machine (or some similar carbonation machine) to make whipped cream by carbonating the cream until it becomes whipped cream?
No, because the bottle would explode off the Soda Stream, spraying cream and foam all over your kitchen.

Per the Soda Stream FAQ:


  No. Only water should be carbonated in the SodaStream Sparkling Water Maker. You risk damaging your Sparkling Water Maker, not to mention making a big fizzy mess! The money-back guarantee and the warranty are both invalidated if you carbonate any liquid other than water in your Sparkling Water Maker. Stick with plain, cold water and adding any one of our fantastic flavors - AFTER the water has been carbonated! 


Speaking from personal experience, the Soda Stream won't tolerate anything even a little more viscous than water ... not even fruit juice.  The liquid foams too fast and blows the bottle off the device.  Cream would be a hilarious mess.