CCM: Magic Carpet V2 (1.13)

summon falling_block ~ ~1 ~ {BlockState:{Name:"log"},Time:1,Passengers:[{id:falling_block,BlockState:{Name:"redstone_block"},Time:1,Passengers:[{id:falling_block,BlockState:{Name:"activator_rail"},Time:1,Passengers:[{id:command_block_minecart,Command:"kill @e[type=!Player,tag=ccp_ToP9keC5]"},{id:command_block_minecart,Command:"kill @e[tag=ccp_ToP9keC5_r]"},{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"fill ~2 ~-3 ~-1 ~7 ~-1 ~1 red_terracotta hollow"},{id:command_block_minecart,Command:"fill ~2 ~-2 ~-1 ~7 ~-2 ~1 yellow_stained_glass replace red_terracotta"},{id:command_block_minecart,Command:"setblock ~1 ~-2 ~ wall_sign[facing=west]{Text1:\"{\\\"text\\\":\\\"\\\"}\",Text2:\"{\\\"text\\\":\\\"Destroy\\\",\\\"color\\\":\\\"dark_red\\\",\\\"bold\\\":true}\",Text3:\"{\\\"text\\\":\\\"Machine\\\",\\\"color\\\":\\\"dark_red\\\",\\\"bold\\\":true}\",Text4:\"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-1 ~-1 ~6 ~1 ~1 air\\\"}}\"}"},{id:command_block_minecart,Command:"scoreboard objectives add Sneak minecraft.custom:minecraft.sneak_time Sneak"},{id:command_block_minecart,Command:"tag @p add carpet"},{id:command_block_minecart,Command:"setblock ~6 ~-2 ~0 chain_command_block[facing=east]{TrackOutput:0,auto:1,Command:\"execute as @a[tag=carpet] run effect give @s speed 1 0 true\"}"},{id:command_block_minecart,Command:"setblock ~5 ~-2 ~0 chain_command_block[facing=east]{TrackOutput:0,auto:1,Command:\"execute as @a[scores={Sneak=1..}] run scoreboard players set @s Sneak 0\"}"},{id:command_block_minecart,Command:"setblock ~4 ~-2 ~0 chain_command_block[facing=east]{TrackOutput:0,auto:1,Command:\"execute at @a[tag=carpet,scores={Sneak=..0}] run fill ~-1 ~-1 ~-1 ~1 ~-1 ~1 red_wool keep\"}"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~0 repeating_command_block[facing=east]{TrackOutput:0,auto:1,Command:\"execute at @a[tag=carpet] run fill ~-3 ~-2 ~-3 ~3 ~1 ~3 air replace red_wool\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"},{id:command_block_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:command_block_minecart,Command:"kill @e[type=command_block_minecart,distance=..1]"}]}]}]}