One Trillion Dollars Visualized
mint.com
mint.com
-Placed end to end a line of one dollar bills would stretch from the earth to the sun
-You could could more than cover I-10 from coast to coast in hundred dollar bills (six fifteen foot wide lanes)
-Stacked on top the pile of one dollar bills would stand 63 thousand miles tall or a bit over 1/4 of the distance from the earth to the moon.
Also, from the same article: "As of 31 December 2007, the TSX had 3,951 listed companies with a combined market capitalization of $2.2 trillion."
To me, that seems impressively large enough.